China's fan control system needs further breakthrough

Wind power is a new energy industry that is currently safe, environmentally friendly, has the most potential for development and is mature in technology. The future competition in the global new energy industry is mainly reflected in the wind power industry, and large-capacity offshore wind turbines are the trend for the development of domestic wind turbines in the future. It is subject to the current economic situation and national policies. The impact of wind power market in 2010 will continue to grow rapidly, but the increase will be less than in previous years.

Compared with other automation products, since wind farms are often built in harsh environments such as deserts and seas, the on-site operating environment of wind turbines is harsh, and the requirements for automation products in the wind power industry are more stringent, requiring strong wind power control systems. The data storage function, perfect security protection function and strong openness.

The fan control system is an important part of the fan, and it undertakes important tasks such as fan monitoring, automatic adjustment, maximum wind energy capture, and good grid compatibility. It is mainly composed of monitoring system, main control system, pitch control system and frequency conversion system ( Converter) is composed of several parts.

In terms of the requirements of the fan control system itself, it has its specificity and complexity. The task of the fan control system is not only to achieve a high degree of automatic monitoring of the fan and power supply to the grid, but also must be achieved through appropriate control of wind energy capture Maximizing and minimizing the load. Even if a general automation company can develop a prototype, it will be difficult to verify and popularize it. The small and medium-sized blower manufacturers are unable to carry out such development. So far, foreign brands The dependence is still relatively large, which is still the weakest link in the manufacturing of wind power equipment.

After years of efforts, domestic enterprises have made positive progress in the development of the major components of the control system, and have basically formed independent technological development capabilities. What they lack is mainly the large-scale operation of the product and the accumulation of technology and experience. For example, as the main control system and frequency converter with the highest technological content in the fan control system, domestic enterprises have made important progress in independent development. The other components of the fan, including blades, gear boxes, generators, bearings and other core components have been basically realized. Domestic support.

With the development of fan capacity developed by domestic companies, the fan control technology must be continuously developed to meet the requirements, such as the drive and control technology of the blades, and the development of larger-capacity inverters are new topics that must be continuously solved. As the proportion of wind turbines in China’s power grid is increasing, the problem of poor compatibility of wind power generation grids has gradually emerged. At the same time, users have increasingly demanded networking between different wind farms and different types of wind turbines. The higher, this also puts forward a new task for the fan control system.